1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ee3b54b5abbb28186d1b2a8966b82446a78e2d83a28a3697502ef97c591316. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4028babf-e421-4fd6-b7ab-782e9cbc63b5.json and https://artists.proofprofile.net/proofs/artist/4028babf-e421-4fd6-b7ab-782e9cbc63b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Her Bor Jeg - Alle Tiders Bedste Børnesange
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c73eb5a3566ba75b2c1cbd2c7a413eb58f06996a488d93be1e2bb79ddd8fd54. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG0900286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4e241a1934faafd2e4e799a3853ae36dcf2639f55a5c2a6e715d2e2e3085a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG1200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcda523c6b422e751f79132aea376a3a193bd34e6fdb96c3d3fe300a8f6696f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXA9487101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41121f654ea79328b8b70d5fe5fd565254f71928443f632023404fdec86d8118. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG9802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86ac42ce53f9ac013a79eaaaee3c56a39169073e4635bb1edc1c2046d7a7766. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXD9400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98009d5dd8c9c30ced502b7de49572383e4b575225df995dbb7659a19fc8d209. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DK4YA1002301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518bf47f087c979240c93a44e8998add45c05646a74b99a09729789e4107bad0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG9901803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d452c35b4f9b7209d49e895132cee627d1f9e174da27b33bd12eeccf501011b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXG9300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe683e4d0e3b6f28b057d31056f58374c1faefffe5f59839a90832f1620770a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DK4YA1002303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c42fcddfdebaa2b60c2158e3082f149f2662bace7624aff143ae4f20f566a30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG9901809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71773b0ecc4c60780ef11445c13c2ad628428de0aea087f0f8e9fe0d9e26190c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG0800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40657d8e0e0b6f19a9ec769dc8b7cfbf68e12824edc8c17f93c6cf8007ac2f67. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG8600213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86ac42ce53f9ac013a79eaaaee3c56a39169073e4635bb1edc1c2046d7a7766. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXD9400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc97b5b6560ad1e81971661d4d8022396e6e1b7b9c5b6f53f075c001c6e17d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e0718c2b2f1fd3fe5d022c43a0e6ded603f8a7a56cfe9af401d897633e6e8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb870dd2122fdcfc7fad57260f7d6cc45ae3a5db9a6c2a33547c8ac5a34102f58. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf56ed6e113215f2b9ff43364e2ba8c7b4be172cae5666bbd964c29269bc16d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641034bda2a9c2c8627aecfbf80d9c4af4db4894945f27dac9536342c05d1908. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00e377adc369d182927a226a2d0e1d8e38a20909d69e68e3789c7c2c1df60eb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73f1193cac04ca180c7d0c4017d71e7ff8b78f6fd87a5bf1d57a50499efa7fc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfcb6b0fce7ab73acb06f7096935a6f5bf645ca78e97d134d545f12e6e92311. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbd2c50432308c598b402132e2d2eeaae2ed25830de057fe5c5c64ab0e293da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66998f3d8f3f649f748ff39ebc832d3b71eb5ac408a9048d2d0e7118638ba695. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAXK9774015.